Definitions by Cool_Hand_Luke

tylenol pm challenge 

Taking a handful of Tylenol PM and then trying to have an orgasm before you fall asleep. Something that has been rumored as impossible by old people everywhere.

Hayden- "I just did 50 pull ups!"

Luke- "Please, I have completed the Tylenol PM challenge the past three nights in a row."

Hayden- "Nigger please, your shitting me"

tylenol pm challenge by Cool_Hand_Luke December 1, 2013

Refrigerant-134a 

A refrigerant prevalent in thermodynamics classes.

In a closed system, it is good to use refrigerant-134a.

Refrigerant-134a by cool_hand_luke October 30, 2012